23729449 has 4 divisors (see below), whose sum is σ = 23959936. Its totient is φ = 23498964.

The previous prime is 23729443. The next prime is 23729479. The reversal of 23729449 is 94492732.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23729449 - 2³ = 23729441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23729441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115089 + ... + 115294.

It is an arithmetic number, because the mean of its divisors is an integer number (5989984).

Almost surely, 2^23729449 is an apocalyptic number.

It is an amenable number.

23729449 is a deficient number, since it is larger than the sum of its proper divisors (230487).

23729449 is a wasteful number, since it uses less digits than its factorization.

23729449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230486.

The product of its digits is 108864, while the sum is 40.

The square root of 23729449 is about 4871.2882279742. The cubic root of 23729449 is about 287.3619208402.

The spelling of 23729449 in words is "twenty-three million, seven hundred twenty-nine thousand, four hundred forty-nine".